mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-14 23:30:06 +00:00
04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
307 lines
6.7 KiB
C
307 lines
6.7 KiB
C
/* Test and measure memcpy functions.
|
|
Copyright (C) 1999-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Written by Jakub Jelinek <jakub@redhat.com>, 1999.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef MEMCPY_RESULT
|
|
# define MEMCPY_RESULT(dst, len) dst
|
|
# define MIN_PAGE_SIZE 131072
|
|
# define TEST_MAIN
|
|
# define TEST_NAME "memcpy"
|
|
# include "test-string.h"
|
|
|
|
char *simple_memcpy (char *, const char *, size_t);
|
|
char *builtin_memcpy (char *, const char *, size_t);
|
|
|
|
IMPL (simple_memcpy, 0)
|
|
IMPL (builtin_memcpy, 0)
|
|
IMPL (memcpy, 1)
|
|
|
|
char *
|
|
simple_memcpy (char *dst, const char *src, size_t n)
|
|
{
|
|
char *ret = dst;
|
|
while (n--)
|
|
*dst++ = *src++;
|
|
return ret;
|
|
}
|
|
|
|
char *
|
|
builtin_memcpy (char *dst, const char *src, size_t n)
|
|
{
|
|
return __builtin_memcpy (dst, src, n);
|
|
}
|
|
#endif
|
|
|
|
typedef char *(*proto_t) (char *, const char *, size_t);
|
|
|
|
static void
|
|
do_one_test (impl_t *impl, char *dst, const char *src,
|
|
size_t len)
|
|
{
|
|
size_t i;
|
|
|
|
/* Must clear the destination buffer set by the previous run. */
|
|
for (i = 0; i < len; i++)
|
|
dst[i] = 0;
|
|
|
|
if (CALL (impl, dst, src, len) != MEMCPY_RESULT (dst, len))
|
|
{
|
|
error (0, 0, "Wrong result in function %s %p %p", impl->name,
|
|
CALL (impl, dst, src, len), MEMCPY_RESULT (dst, len));
|
|
ret = 1;
|
|
return;
|
|
}
|
|
|
|
if (memcmp (dst, src, len) != 0)
|
|
{
|
|
error (0, 0, "Wrong result in function %s dst %p \"%.*s\" src %p \"%.*s\" len %zu",
|
|
impl->name, dst, (int) len, dst, src, (int) len, src, len);
|
|
ret = 1;
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void
|
|
do_test (size_t align1, size_t align2, size_t len)
|
|
{
|
|
size_t i, j;
|
|
char *s1, *s2;
|
|
|
|
align1 &= 63;
|
|
if (align1 + len >= page_size)
|
|
return;
|
|
|
|
align2 &= 63;
|
|
if (align2 + len >= page_size)
|
|
return;
|
|
|
|
s1 = (char *) (buf1 + align1);
|
|
s2 = (char *) (buf2 + align2);
|
|
|
|
for (i = 0, j = 1; i < len; i++, j += 23)
|
|
s1[i] = j;
|
|
|
|
FOR_EACH_IMPL (impl, 0)
|
|
do_one_test (impl, s2, s1, len);
|
|
}
|
|
|
|
static void
|
|
do_random_tests (void)
|
|
{
|
|
size_t i, j, n, align1, align2, len, size1, size2, size;
|
|
int c;
|
|
unsigned char *p1, *p2;
|
|
unsigned char *res;
|
|
|
|
for (n = 0; n < ITERATIONS; n++)
|
|
{
|
|
if (n == 0)
|
|
{
|
|
len = getpagesize ();
|
|
size = len + 512;
|
|
size1 = size;
|
|
size2 = size;
|
|
align1 = 512;
|
|
align2 = 512;
|
|
}
|
|
else
|
|
{
|
|
if ((random () & 255) == 0)
|
|
size = 65536;
|
|
else
|
|
size = 768;
|
|
if (size > page_size)
|
|
size = page_size;
|
|
size1 = size;
|
|
size2 = size;
|
|
i = random ();
|
|
if (i & 3)
|
|
size -= 256;
|
|
if (i & 1)
|
|
size1 -= 256;
|
|
if (i & 2)
|
|
size2 -= 256;
|
|
if (i & 4)
|
|
{
|
|
len = random () % size;
|
|
align1 = size1 - len - (random () & 31);
|
|
align2 = size2 - len - (random () & 31);
|
|
if (align1 > size1)
|
|
align1 = 0;
|
|
if (align2 > size2)
|
|
align2 = 0;
|
|
}
|
|
else
|
|
{
|
|
align1 = random () & 63;
|
|
align2 = random () & 63;
|
|
len = random () % size;
|
|
if (align1 + len > size1)
|
|
align1 = size1 - len;
|
|
if (align2 + len > size2)
|
|
align2 = size2 - len;
|
|
}
|
|
}
|
|
p1 = buf1 + page_size - size1;
|
|
p2 = buf2 + page_size - size2;
|
|
c = random () & 255;
|
|
j = align1 + len + 256;
|
|
if (j > size1)
|
|
j = size1;
|
|
for (i = 0; i < j; ++i)
|
|
p1[i] = random () & 255;
|
|
|
|
FOR_EACH_IMPL (impl, 1)
|
|
{
|
|
j = align2 + len + 256;
|
|
if (j > size2)
|
|
j = size2;
|
|
memset (p2, c, j);
|
|
res = (unsigned char *) CALL (impl,
|
|
(char *) (p2 + align2),
|
|
(char *) (p1 + align1), len);
|
|
if (res != MEMCPY_RESULT (p2 + align2, len))
|
|
{
|
|
error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
|
|
n, impl->name, align1, align2, len, res,
|
|
MEMCPY_RESULT (p2 + align2, len));
|
|
ret = 1;
|
|
}
|
|
for (i = 0; i < align2; ++i)
|
|
{
|
|
if (p2[i] != c)
|
|
{
|
|
error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
|
|
n, impl->name, align1, align2, len);
|
|
ret = 1;
|
|
break;
|
|
}
|
|
}
|
|
for (i = align2 + len; i < j; ++i)
|
|
{
|
|
if (p2[i] != c)
|
|
{
|
|
error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
|
|
n, impl->name, align1, align2, len);
|
|
ret = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (memcmp (p1 + align1, p2 + align2, len))
|
|
{
|
|
error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
|
|
n, impl->name, align1, align2, len);
|
|
ret = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
do_test1 (void)
|
|
{
|
|
size_t size = 0x100000;
|
|
void *large_buf;
|
|
|
|
large_buf = mmap (NULL, size * 2 + page_size, PROT_READ | PROT_WRITE,
|
|
MAP_PRIVATE | MAP_ANON, -1, 0);
|
|
if (large_buf == MAP_FAILED)
|
|
{
|
|
puts ("Failed to allocat large_buf, skipping do_test1");
|
|
return;
|
|
}
|
|
|
|
if (mprotect (large_buf + size, page_size, PROT_NONE))
|
|
error (EXIT_FAILURE, errno, "mprotect failed");
|
|
|
|
size_t arrary_size = size / sizeof (uint32_t);
|
|
uint32_t *dest = large_buf;
|
|
uint32_t *src = large_buf + size + page_size;
|
|
size_t i;
|
|
|
|
for (i = 0; i < arrary_size; i++)
|
|
src[i] = (uint32_t) i;
|
|
|
|
FOR_EACH_IMPL (impl, 0)
|
|
{
|
|
memset (dest, -1, size);
|
|
CALL (impl, (char *) dest, (char *) src, size);
|
|
for (i = 0; i < arrary_size; i++)
|
|
if (dest[i] != src[i])
|
|
{
|
|
error (0, 0,
|
|
"Wrong result in function %s dst \"%p\" src \"%p\" offset \"%zd\"",
|
|
impl->name, dest, src, i);
|
|
ret = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
munmap ((void *) dest, size);
|
|
munmap ((void *) src, size);
|
|
}
|
|
|
|
int
|
|
test_main (void)
|
|
{
|
|
size_t i;
|
|
|
|
test_init ();
|
|
|
|
printf ("%23s", "");
|
|
FOR_EACH_IMPL (impl, 0)
|
|
printf ("\t%s", impl->name);
|
|
putchar ('\n');
|
|
|
|
for (i = 0; i < 18; ++i)
|
|
{
|
|
do_test (0, 0, 1 << i);
|
|
do_test (i, 0, 1 << i);
|
|
do_test (0, i, 1 << i);
|
|
do_test (i, i, 1 << i);
|
|
}
|
|
|
|
for (i = 0; i < 32; ++i)
|
|
{
|
|
do_test (0, 0, i);
|
|
do_test (i, 0, i);
|
|
do_test (0, i, i);
|
|
do_test (i, i, i);
|
|
}
|
|
|
|
for (i = 3; i < 32; ++i)
|
|
{
|
|
if ((i & (i - 1)) == 0)
|
|
continue;
|
|
do_test (0, 0, 16 * i);
|
|
do_test (i, 0, 16 * i);
|
|
do_test (0, i, 16 * i);
|
|
do_test (i, i, 16 * i);
|
|
}
|
|
|
|
do_test (0, 0, getpagesize ());
|
|
|
|
do_random_tests ();
|
|
|
|
do_test1 ();
|
|
|
|
return ret;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|